<p>Black triangles indicate unburned areas, and white triangles indicated areas burned in 2... more <p>Black triangles indicate unburned areas, and white triangles indicated areas burned in 2001, 2005, and 2009.</p
<p>List of shrub and tree species found in the riparian forest of the Paraguay River in bur... more <p>List of shrub and tree species found in the riparian forest of the Paraguay River in burned and unburned areas between 2001 and 2011.</p
<p>Graphic performed with Generalized Linear Model only for visualization purposes once the... more <p>Graphic performed with Generalized Linear Model only for visualization purposes once the results of GLM and GLMM were very similar. The continuous and dotted lines are burned and unburned areas respectively. The shaded areas in both lines are confidence intervals.</p
<p>Data provided by Brazilian Navy and INMET (Brazilian National Institute of Meteorology).... more <p>Data provided by Brazilian Navy and INMET (Brazilian National Institute of Meteorology).</p
<p>Of the 24 combinations, 5 had species with significant group equalized indicator values ... more <p>Of the 24 combinations, 5 had species with significant group equalized indicator values (IndVal<sub>g</sub>), and 13 of the 39 tree and shrub species were indicative for a factor combination. Low inundation refers to areas of 4.32–4.85 m, while high inundation refers to areas of 3.79–4.32 m in relation to the zero of the Ladário gauge.</p
<p>Interactions were found to be significant for richness and abundance but not for basal a... more <p>Interactions were found to be significant for richness and abundance but not for basal area. The applied distribution type is listed beneath the name of the respective dependent variable. Numbers in brackets denote standard errors. Pseudo-R² calculation followed Nakagawa & Schielzeth [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0156825#pone.0156825.ref040" target="_blank">40</a>]. The marginal R<sup>2</sup> shows the variation explained only by the fixed effects while the conditional R<sup>2</sup> shows the variation of the fixed and random effects. For the negative-binomial abundance model calculation of R² was not possible hence we used the R<sup>2</sup> of a Poisson model as a proxy.</p
Os campos cerrados ha muito tempo vem sendo ocupados para a criacao extensiva de gado bovino no P... more Os campos cerrados ha muito tempo vem sendo ocupados para a criacao extensiva de gado bovino no Pantanal de Mato Grosso do Sul. Apesar da grande importância dessa fisionomia para a pecuaria na regiao, ainda sao poucos os estudos de estrutura e composicao floristica nesse tipo de fisionomia. Desse modo, este trabalho teve como objetivo realizar um levantamento floristico e fitossociologico das especies lenhosas de uma area de campo cerrado na fazenda Nhumirim, sub-regiao da Nhecolândia. As amostragens da vegetacao foram feitas pelo metodo de quadrantes moveis, sendo incluidos somente individuos com diâmetro ao nivel do solo (DAS) ≥ 1 cm. Os parâmetros fitossociologicos foram estimados com auxilio do programa FITOPAC 1, alem das similaridades floristica (Indice de Jaccard) e proporcional da area. Registrou-se 187 individuos pertencentes a 23 especies, 22 generos e 17 familias. A densidade total foi de 1.670 individuos/hectare. A altura media dos individuos foi de 1,6 m, com amplitude ...
O Pantanal e conhecido pela sua riqueza ictiofaunistica e constitui regiao de pesca visitada por ... more O Pantanal e conhecido pela sua riqueza ictiofaunistica e constitui regiao de pesca visitada por muitos pescadores esportivos. Mas o que faz com que esse tipo de ambiente inundavel seja tao rico em peixes? Esse artigo se propoe a responder a essa questao, mostrando que o pulso de inundacao, o encher e secar a cada ano, tipico de ambientes inundaveis, e o processo ecologico que regula sua fauna e flora, particularmente os peixes. Para tanto foi escolhido um braco abandonado do Rio Paraguai, denominado localmente como Baia do Tuiuiu, onde se estudou o ambiente, em termos de vegetacao circundante, as caracteristicas limnologicas de suas aguas e suas relacoes com os peixes ocorrentes em termos de composicao, riqueza, diversidade e suas estrategias de vida.
Resumo O presente estudo teve por finalidade estudar as espécies da família Lauraceae no municípi... more Resumo O presente estudo teve por finalidade estudar as espécies da família Lauraceae no município de Corumbá-MS, baseado principalmente em coleções botânicas depositadas em herbários. Foram também realizadas coletas em várias regiões do município, principalmente na morraria Santa Cruz. São registradas para o município 10 espécies subordinadas a cinco gêneros, a saber: Aiouea trinervis, Aniba heringerii, Cassytha filiformis, Nectandra amazonum, N. cissiflora, N. gardneri, N. hihua, N. psammophila, Ocotea diospyrifolia e O. velloziana. Aniba heringerii é citada pela primeira vez para o Mato Grosso do Sul. Chaves para a identificação, descrições e ilustrações das espécies são apresentadas.
Climatic factors can influence the establishment and growth of wood species, but little is known ... more Climatic factors can influence the establishment and growth of wood species, but little is known about the effect of these factors on monodominant communities in wetlands. Therefore, we asked how climatic factors, such as ENSO (El Niño-Southern Oscillation), precipitation and flooding, influence growth and establishment of the dominant species Erythrina fusca in the Pantanal. We determined the age of sampled individuals, the age of the population and evaluated the effects of climate on tree growth. We obtained samples for dendrochronological analyses using destructive (seven individuals) and non-destructive methods. We cross-dated and built a chronology, correlating results with climatic factors. We sampled 0.6 ha of the population and separated individuals into diameter classes to determine age based on diameter/age ratio obtained through dendrochronological analyses. We obtained a chronology with individuals up to 34 years old, while in the population sample, the oldest individual...
We report the occurrence of several remnant stands of Trithrinax schizophylla Drude in Porto Murt... more We report the occurrence of several remnant stands of Trithrinax schizophylla Drude in Porto Murtinho municipality, southwestern Mato Grosso do Sul state, Brazil. Until recently, the species was considered as probably extinct in the country. Trithrinax schizophylla is found only in the Chaco provinces of Argentina, Paraguay, and Bolivia, with a narrow strip in the southwestern region of Mato Grosso do Sul. The region is one of the most modified inside the Pantanal wetland in Brazil, and conservation actions are in need to protect this and other species in the region.
In this contribution the rediscovery of the bromeliad Dyckia excelsa in Mato Grosso do Sul state,... more In this contribution the rediscovery of the bromeliad Dyckia excelsa in Mato Grosso do Sul state, central-western Brazil, is reported. This species was first described based on a single individual from a particular collection in 1993 with no precise locality. Illustrations and a brief discussion on the leaf anatomy of the species are provided. One additional species, Dyckia gracilis, which has been overlooked by previous authors, is included in the list of Bromeliaceae of Mato Grosso do Sul State. An updated key for Dyckia species from the region of D. excelsa is presented. The status of D. excelsa in Mato Grosso do Sul State, Brazil, is discussed, and recommendations for its conservation are offered.
<p>Black triangles indicate unburned areas, and white triangles indicated areas burned in 2... more <p>Black triangles indicate unburned areas, and white triangles indicated areas burned in 2001, 2005, and 2009.</p
<p>List of shrub and tree species found in the riparian forest of the Paraguay River in bur... more <p>List of shrub and tree species found in the riparian forest of the Paraguay River in burned and unburned areas between 2001 and 2011.</p
<p>Graphic performed with Generalized Linear Model only for visualization purposes once the... more <p>Graphic performed with Generalized Linear Model only for visualization purposes once the results of GLM and GLMM were very similar. The continuous and dotted lines are burned and unburned areas respectively. The shaded areas in both lines are confidence intervals.</p
<p>Data provided by Brazilian Navy and INMET (Brazilian National Institute of Meteorology).... more <p>Data provided by Brazilian Navy and INMET (Brazilian National Institute of Meteorology).</p
<p>Of the 24 combinations, 5 had species with significant group equalized indicator values ... more <p>Of the 24 combinations, 5 had species with significant group equalized indicator values (IndVal<sub>g</sub>), and 13 of the 39 tree and shrub species were indicative for a factor combination. Low inundation refers to areas of 4.32–4.85 m, while high inundation refers to areas of 3.79–4.32 m in relation to the zero of the Ladário gauge.</p
<p>Interactions were found to be significant for richness and abundance but not for basal a... more <p>Interactions were found to be significant for richness and abundance but not for basal area. The applied distribution type is listed beneath the name of the respective dependent variable. Numbers in brackets denote standard errors. Pseudo-R² calculation followed Nakagawa & Schielzeth [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0156825#pone.0156825.ref040" target="_blank">40</a>]. The marginal R<sup>2</sup> shows the variation explained only by the fixed effects while the conditional R<sup>2</sup> shows the variation of the fixed and random effects. For the negative-binomial abundance model calculation of R² was not possible hence we used the R<sup>2</sup> of a Poisson model as a proxy.</p
Os campos cerrados ha muito tempo vem sendo ocupados para a criacao extensiva de gado bovino no P... more Os campos cerrados ha muito tempo vem sendo ocupados para a criacao extensiva de gado bovino no Pantanal de Mato Grosso do Sul. Apesar da grande importância dessa fisionomia para a pecuaria na regiao, ainda sao poucos os estudos de estrutura e composicao floristica nesse tipo de fisionomia. Desse modo, este trabalho teve como objetivo realizar um levantamento floristico e fitossociologico das especies lenhosas de uma area de campo cerrado na fazenda Nhumirim, sub-regiao da Nhecolândia. As amostragens da vegetacao foram feitas pelo metodo de quadrantes moveis, sendo incluidos somente individuos com diâmetro ao nivel do solo (DAS) ≥ 1 cm. Os parâmetros fitossociologicos foram estimados com auxilio do programa FITOPAC 1, alem das similaridades floristica (Indice de Jaccard) e proporcional da area. Registrou-se 187 individuos pertencentes a 23 especies, 22 generos e 17 familias. A densidade total foi de 1.670 individuos/hectare. A altura media dos individuos foi de 1,6 m, com amplitude ...
O Pantanal e conhecido pela sua riqueza ictiofaunistica e constitui regiao de pesca visitada por ... more O Pantanal e conhecido pela sua riqueza ictiofaunistica e constitui regiao de pesca visitada por muitos pescadores esportivos. Mas o que faz com que esse tipo de ambiente inundavel seja tao rico em peixes? Esse artigo se propoe a responder a essa questao, mostrando que o pulso de inundacao, o encher e secar a cada ano, tipico de ambientes inundaveis, e o processo ecologico que regula sua fauna e flora, particularmente os peixes. Para tanto foi escolhido um braco abandonado do Rio Paraguai, denominado localmente como Baia do Tuiuiu, onde se estudou o ambiente, em termos de vegetacao circundante, as caracteristicas limnologicas de suas aguas e suas relacoes com os peixes ocorrentes em termos de composicao, riqueza, diversidade e suas estrategias de vida.
Resumo O presente estudo teve por finalidade estudar as espécies da família Lauraceae no municípi... more Resumo O presente estudo teve por finalidade estudar as espécies da família Lauraceae no município de Corumbá-MS, baseado principalmente em coleções botânicas depositadas em herbários. Foram também realizadas coletas em várias regiões do município, principalmente na morraria Santa Cruz. São registradas para o município 10 espécies subordinadas a cinco gêneros, a saber: Aiouea trinervis, Aniba heringerii, Cassytha filiformis, Nectandra amazonum, N. cissiflora, N. gardneri, N. hihua, N. psammophila, Ocotea diospyrifolia e O. velloziana. Aniba heringerii é citada pela primeira vez para o Mato Grosso do Sul. Chaves para a identificação, descrições e ilustrações das espécies são apresentadas.
Climatic factors can influence the establishment and growth of wood species, but little is known ... more Climatic factors can influence the establishment and growth of wood species, but little is known about the effect of these factors on monodominant communities in wetlands. Therefore, we asked how climatic factors, such as ENSO (El Niño-Southern Oscillation), precipitation and flooding, influence growth and establishment of the dominant species Erythrina fusca in the Pantanal. We determined the age of sampled individuals, the age of the population and evaluated the effects of climate on tree growth. We obtained samples for dendrochronological analyses using destructive (seven individuals) and non-destructive methods. We cross-dated and built a chronology, correlating results with climatic factors. We sampled 0.6 ha of the population and separated individuals into diameter classes to determine age based on diameter/age ratio obtained through dendrochronological analyses. We obtained a chronology with individuals up to 34 years old, while in the population sample, the oldest individual...
We report the occurrence of several remnant stands of Trithrinax schizophylla Drude in Porto Murt... more We report the occurrence of several remnant stands of Trithrinax schizophylla Drude in Porto Murtinho municipality, southwestern Mato Grosso do Sul state, Brazil. Until recently, the species was considered as probably extinct in the country. Trithrinax schizophylla is found only in the Chaco provinces of Argentina, Paraguay, and Bolivia, with a narrow strip in the southwestern region of Mato Grosso do Sul. The region is one of the most modified inside the Pantanal wetland in Brazil, and conservation actions are in need to protect this and other species in the region.
In this contribution the rediscovery of the bromeliad Dyckia excelsa in Mato Grosso do Sul state,... more In this contribution the rediscovery of the bromeliad Dyckia excelsa in Mato Grosso do Sul state, central-western Brazil, is reported. This species was first described based on a single individual from a particular collection in 1993 with no precise locality. Illustrations and a brief discussion on the leaf anatomy of the species are provided. One additional species, Dyckia gracilis, which has been overlooked by previous authors, is included in the list of Bromeliaceae of Mato Grosso do Sul State. An updated key for Dyckia species from the region of D. excelsa is presented. The status of D. excelsa in Mato Grosso do Sul State, Brazil, is discussed, and recommendations for its conservation are offered.
Uploads
Papers by Iria Ishii
reported. This species was first described based on a single individual from a particular collection in 1993 with no precise locality. Illustrations and a brief discussion on the leaf anatomy of the species are provided. One additional species, Dyckia gracilis, which has been overlooked by previous authors, is included in the list of Bromeliaceae of Mato Grosso do Sul State. An updated key for Dyckia species from the region of D. excelsa is presented. The status of D. excelsa in Mato Grosso do Sul State, Brazil, is discussed, and recommendations for its
conservation are offered.
reported. This species was first described based on a single individual from a particular collection in 1993 with no precise locality. Illustrations and a brief discussion on the leaf anatomy of the species are provided. One additional species, Dyckia gracilis, which has been overlooked by previous authors, is included in the list of Bromeliaceae of Mato Grosso do Sul State. An updated key for Dyckia species from the region of D. excelsa is presented. The status of D. excelsa in Mato Grosso do Sul State, Brazil, is discussed, and recommendations for its
conservation are offered.